Often called hidden Spina Bifida, the spinal cord and the nerves are usually normal
and there is no opening on the back. In this relatively harmless form of Spina Bifida,
there is a small defect or gap in a few of the small bones (vertebrae) that make
up the spine.

There may be no motor or sensory impairments evident at birth. Subtle, progressive
neurologic deterioration often becomes evident in later childhood or adulthood.

In many instances, Spina Bifida Occulta is so mild that there is no disturbance of
spinal function at all. Occulta can be diagnosed at any age.

Meningocele

The protective coatings (meninges) come through the open part of the spine like a
sac that is pushed out. Cerebrospinal fluid is in the sac and there is usually no
nerve damage. Individuals may suffer minor disabilities. Additional problems can
develop later in life.

Myelomeningocele

This form of Spina Bifida occurs when the meninges (protective covering of the spinal
cord) and spinal nerves come through the open part of the spine. This is the most
serious type of Spina Bifida, which causes nerve damage and more severe disabilities.